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Show To Make Stones Stronger. H Almost everybody knows the rula H of thu masons that stone used In H building should be so placed that it . will lie as it lay In Its natural bed when quarried. Put Francis W. Hoyt, lu tho Knglneerlng Nows, says that this familiar rulo needs in many casos H to be supplemented with other procau- H lions. Thero aro three planes of frnc- H ture known to qunrrymon. Tho "rift" H Is tho direction In which tho stono H splits most easily; tho "grain" that which is next easiest; the "head" that which offers tho greatest resistance. H ln n paving block the two sides re pre- M sent the rift fracture, tho top and H bottom tho grain nnd the ends the H head. Hut In n quarry tho natural bed Is sometimes conslrcrably Inclined H to the plnno of tho rqlft; bonce tha lmporfectluii of thu ordinary rulo for H placing thu stono In building. H |